[libcxx-commits] [libcxx] [llvm] [libc++] Move some macOS CI jobs to Github actions (PR #89083)

[Tom Stellard via libcxx-commits]

https://github.com/tstellar commented:

How often will this job be running?  We are limited to only 5 concurrent macOS jobs at a time, so if this is going to be running for each PR, we may quickly run out of capacity.

https://github.com/llvm/llvm-project/pull/89083